Blind people have been using walking sticks for years. It helps people that can’t see “feel” for things that are at a distance, such as walls and holes. Well, the Tactile Wand Electronic Walking Stick takes things to a modern level. It is a device that uses a distance sensor to detect objects in front of the user. As the user comes closer to the object, the greater the vibration in the device. I guess you could call it a type of “sonar”. The device is battery operated and a charging cradle is included. Right now, the device is only a concept. Hopefully, it will come into existence, because I can understand how this could really help people with impaired vision, even though it needs to be perfected. Like being able to “detect” things like open elevator shafts, or cliffs.

via source